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Related Concept Videos

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Adjusting a Traverse

In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
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Related Experiment Video

Updated: May 14, 2026

Measuring the Complete-arch Distortion of an Optical Dental Impression
06:51

Measuring the Complete-arch Distortion of an Optical Dental Impression

Published on: May 30, 2019

Are arch width measurements from Invisalign arch width tables reliable?

Cristina de-la-Rosa-Gay1,2, Sofia Valmaseda-de-la-Rosa1, Andrea Hernández-Mangas3

  • 1Department of Dentistry, School of Medicine and Health Sciences, Campus Bellvitge, Universitat de Barcelona, Carrer Feixa Llarga s/n. L'Hospitalet de Llobregat, Barcelona, 08907, Spain.

Clinical Oral Investigations
|May 13, 2026
PubMed
Summary
This summary is machine-generated.

Invisalign ClinCheck arch width tables accurately predict arch width changes, showing strong agreement with independent measurements from digital models. This validation confirms their reliability for orthodontic treatment planning.

Keywords:
AgreementClear aligner therapyDigital modelsExpansionInvisalignValidation

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Related Experiment Videos

Last Updated: May 14, 2026

Measuring the Complete-arch Distortion of an Optical Dental Impression
06:51

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Published on: May 30, 2019

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Published on: February 23, 2024

Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision
07:57

Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision

Published on: April 29, 2014

Area of Science:

  • Orthodontics
  • Digital Dentistry
  • Biomedical Engineering

Background:

  • Invisalign treatment planning relies on arch width tables, but their accuracy lacks independent verification.
  • Assessing the precision of these tables is crucial for effective orthodontic outcomes.

Purpose of the Study:

  • To independently evaluate the accuracy of Invisalign arch width tables.
  • To compare predicted and observed arch width changes using STL models against ClinCheck table data.

Main Methods:

  • Retrospective analysis of 35 adults treated with Invisalign.
  • Arch width measurements on digital models (pretreatment, prediction, refinement) using Geomagic Control X.
  • Comparison of predicted/observed expansion and discrepancy with ClinCheck table values using Bland-Altman analysis.

Main Results:

  • High agreement observed between Geomagic Control X and ClinCheck measurements for predicted and observed arch width expansion and discrepancy.
  • Bias values ranged from -0.49 to 0.2 mm, indicating minimal systematic difference.
  • ClinCheck tables demonstrated strong agreement, especially with occlusal reference points (bias: 0.00 mm).

Conclusions:

  • ClinCheck arch width tables are validated by independent metrological assessment.
  • The tables accurately reflect predicted and observed arch width changes derived from virtual casts.
  • These findings support the reliability of Invisalign arch width tables in orthodontic treatment planning.